Sep 24, 2010 11:35pm EDT
. especially shocking is the obscene, even racist language used in calls, placed at all times of the day and night. but now, it's been caught on tape. senior investigative correspondent brian ross brings us this report. brian? >> reporter: cynthia, complaints about debt collectors and their tactics remain by far the number one source of consumer complaints received by the federal trade commission. and based on what we found in an abc news investigation, the tactics have reached an all-time low. in some cases, used on behalf of major american corporations. >> received august 7th at 8:10 p.m. >> what's up [ bleep ]? tell me, how do you stop two [ bleep ] kids from jumping on top of your bed? stick velcro on the ceiling. >> reporter: after bank of america reported that allen jones, 26, had an overdue credit card bill of $81, its debt collectors went on the attack, with a series of obscene, racist messages left on his phone. >> hi y'all, my name is jamal smith and i'm looking for some watermelons. i'm also interested in a couple of slaves, maybe you can go ahead an pick some of my cotton fields.